Can the growth of separation increase the number of iterations required to reach convergence?

03 March 2015 1 4K Report

I'm running ANSYS FLUENT simulation on a compressor cascade, and I wonder if the growth of the separated flow regions could affect the number of iterations required to reach convergence, and why is this the case? Thanks in advance Ahmed.

Cengiz Camci

Surely, this expected. A separation bubble could well be unsteady even under a steady mainstream flow with low momentum and high turbulence levels.

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